Seiko Cal. 6691 - 686

The 6691-686 is a sought-after Hand-Winding piece from Seiko's golden era. With its 20mm lug width and 15.6mm profile, it sits comfortably on most wrists. [seikata-wm-22b77428bd64]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

35mm

Case Thickness

15.6mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Green

Jewels

21j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1979

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